// 
// Copyright(c) 2009 Syntext, Inc. All Rights Reserved.
// Contact: info@syntext.com, http://www.syntext.com
// 
// This file is part of Syntext Serna XML Editor.
// 
// COMMERCIAL USAGE
// Licensees holding valid Syntext Serna commercial licenses may use this file
// in accordance with the Syntext Serna Commercial License Agreement provided
// with the software, or, alternatively, in accorance with the terms contained
// in a written agreement between you and Syntext, Inc.
// 
// GNU GENERAL PUBLIC LICENSE USAGE
// Alternatively, this file may be used under the terms of the GNU General 
// Public License versions 2.0 or 3.0 as published by the Free Software 
// Foundation and appearing in the file LICENSE.GPL included in the packaging 
// of this file. In addition, as a special exception, Syntext, Inc. gives you
// certain additional rights, which are described in the Syntext, Inc. GPL 
// Exception for Syntext Serna Free Edition, included in the file 
// GPL_EXCEPTION.txt in this package.
// 
// You should have received a copy of appropriate licenses along with this 
// package. If not, see <http://www.syntext.com/legal/>. If you are unsure
// which license is appropriate for your use, please contact the sales 
// department at sales@syntext.com.
// 
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
// 
#ifndef COMMON_STRING_FACTORY_H
#define COMMON_STRING_FACTORY_H

#include "common/common_defs.h"
#include "common/String.h"
#include <set>

namespace Common {

#ifndef NDEBUG
static int savedStringSpace = 0;  // simple stats
#endif

class StringFactory  {
    typedef std::set<String> StringStorage;
public:
    String makeString(const String& s)
    {
        StringStorage::const_iterator it = storage_.find(s);
        if (it != storage_.end()) {
#ifndef NDEBUG
            savedStringSpace += s.length() * 2 + 12;
#endif
            return *it;
        }
        storage_.insert(s);
        return s;
    }

private:
    StringStorage storage_;
};

} // namespace Common

#endif // COMMON_STRING_FACTORY_H
